<template>
  <div class="list" ref="wrapper">
    <div>
  <div class="area">
   <div class="title border-topbottom">当前城市</div>
    <div class="button-list">
      <div class="button-wraper">
      <div class="button">{{this.$store.state.city}}</div>
      </div>
    </div>
  </div>
  <div class="area">
    <div class="title border-topbottom">热门城市</div>
    <div class="button-list">
      <div class="button-wraper"
           v-for="item of hot"
           :key="item.id"
           @click="handleCityClick(item.name)"
            >
        <div class="button">{{item.name}}</div>
      </div>
    </div>
  </div>
  <div class="area"
       v-for="(item,key) of cities"
       :key="key"
       :ref="key" >
    <div class="title border-topbottom">{{key}}</div>
    <div class="title-item">
      <div class="item border-bottom"
           v-for="innerItem of item"
           :key="innerItem.id"
           @click="handleCityClick(innerItem.name)"
        >{{innerItem.name}}
      </div>
    </div>
</div>
    </div>
  </div>
</template>
<script>
import Bscroll from 'better-scroll'
export default {
  name: 'CityList',
  props: {
    hot: Array,
    cities: Object,
    letter: String
  },
  methods: {
    handleCityClick (city) {
      this.$store.commit('changeCity', city)
    }
  },
  mounted () {
    this.scroll = new Bscroll(this.$refs.wrapper)
  },
  watch: {
    letter () {
      if (this.letter) {
        const element = this.$refs[this.letter][0]
        this.scroll.scrollToElement(element)
      }
    }
  }
}
</script>
<style lang="stylus" scoped>
  @import "~styles/varibles.styl"
.border-topbottom
  border-color #ccc
.list
  z-index -2
  overflow hidden
  position: absolute
  top 1.58rem
  left 0
  right 0
  bottom 0
.title
  line-height .44rem
  text-indent .2rem
  background #eee
  color #666
  font-size .26rem
.button-wraper
   float left
   width 33.3%
 .button-list
   overflow hidden
   padding .1rem .6rem .1rem .1rem
  .button
    margin .1rem
    text-align center
    border .02rem solid #ccc
    border-radius .06rem
    padding .1rem
  .item
    line-height .76rem
    text-indent .3rem
  .border-topbottom
    &:before
      border-color #ccc
    &:after
      border-color #ccc
.border-bottom
  &:before
    border-color #ccc
</style>
